Carrier bar for polish rods



y 5, 1953 M. A. cox ETAL 2,637,528

CARRIER BAR FOR POLISH RODS Filed July 1, 1949 #461. ,4. 60/, (71/1/51SW/I ZL 67% I Arm/Min Patented May 5, 1953 7 FFlCE 2,637,528 CARRIER BARFOR PoLr'sH Rons Mace A. Cox and James L. Shively, Long Beach, Calif.

Application July 1, 1949, Serial No. 102,568

2 Claims.

In a pumping well the sucker rods which rise from the pump are securedto a polish rod which extends through the stuffing box at the top of thetubing. This polish rod in turn is attached to a carrier bar and thecarrier bar is supported in the reins which hang from the pumping beam,all of which is usual and well known.

An object of our invention is to provide a novel carrier bar in whichthe polish rod can align itself to compensate for mis-aligmnent of thecarrier bar and also to compensate for the small arch of travel in whichthe carrier bar moves.

Another object of our invention is to provide a novel ball fitting whichseats in the carrier bar, the polish rod being mounted on the supporting ball.

Still another object of our invention is to provide a novel means ofseating the supporting ball in the top of the carrier bar so that thecenter of rotation of the carrier ball is either within or very close tothe top of the carrier bar.

Still another object of our invention is to provide a novel carrier barof the character stated, which is simple in construction, effective inoperation and which will permit reciprocation of the polish rod withoutbending or strain in the polish rod.

Other objects, advantages and features of .invention may appear from theaccompanying drawing, the subioined detailed description and theappended claims.

In the drawing:

Figure l is a side elevation of our novel carrier bar.

Figure 2 is a transverse sectional view of the same.

Figure 3 is a top plan view of the carrier bar as viewed from line 3-3of Figure 2 and with the supporting ball removed.

Figure 4 is a top plan view of the supporting ball as viewed from linell of Figure 2.

Referring more particularly to the drawing, the numeral I indicates acarrier bar, preferably formed of a single casting or forging, andformed with two cars 2-3, one on each side thereof, these ears areengaged by the reins (not shown) which extend to the reciprocatingpumping beam of the apparatus. The method of supporting a carrier barfrom the reins of a pumping mechanism is usual and well known and thedetails of this support form no part of our invention.

A tapered bore 4 extends vertically through the body of the carrier barI and this bore is larger at the bottom than at the top, the purpose ofthis flare in the bore will be further described.

A carrier ball 5 consists of a spherical lower portion 6 which seats inthe spherical seat 1 in the top of the carrier bar I. A flange 8 isintegrally formed on the top of the ball 6 and the upper face of thisflange is fiat so that the clamp 9 which clamps on to the polish rod Illwill rest on this flat surface. The polish rod clamp 9 is of usual andwell known construction and provides a means of connecting the polishrod to the ball carrier 5. A vertical bore ll through the carrier ballclosely fits the polish rid ill so that any lateral movement of thepolish rod will cause the ball or spherical portion 6 to rock in theseat i. The flare in the bore 4 permits the polish rod to move laterallywithin the body of the carrier bar as may be necessary to permit thepolish rod to remain in a vertical position relative to the usualstufiing box on the top of the tubing.

It will be evident that any horizontal misalignment of the body of thecarrier bar will be compensated for by a shifting of the ball 6 in theseat 1.

Similarly, as the carrier bar E reciprocates in the pumping of the well,a slight arch in which it moves will cause the ball 6 to rock. in theseat I and will permit the polish rod It to remain substantiallyvertical and without creating anv bending or other stresses in thepolish rod.

Having described our invention, we claim:

1. A carrier bar for polish rods comprising a body, a pair of oppositelypositioned ears extend ing from said body by means of which the both issupported, said body having a vertical bore extending therethrough fromtop to bottom, said bore being tapered outwardly towards the bottom ofthe body, a hemispherical seat formed in the body and at the upper endof said bore, a carrier ball swivelly mounted in said seat and inalignment with. the bore, said carrier ball. having a hole extendingvertically therethrough and in alignment with said bore, said carrierball including an integral. and outwardly flared flange on the upper endthereof, and the upper face of said flange being flat and of greaterdiameter than said carrier ball.

2. A carrier bar for polish rods comprising a body, a pair of oppositelypositioned ears extending from said body by means of which the body issupported, said body having a vertical bore ex-- tending therethroughfrom top to bottom, said bore being tapered outwardly towards the bottomof the body, a hemispherical seat formed in the body and at the upperend of said bore, a carrier ball swivelly mounted in said seat and inalignment with the bore, said carrier ball having a hole extendingvertically therethrough and in alignment with said bore, said carrierball including an integral and outwardly flared flange on the upper endthereof, and the upper face of said flange being flat and of greaterdiameter than said carrier ball, the polish rod extending verticallythrough the carrier ball and through said bore in the body, and a clampencircling the polish rod and resting on top of the fiat upper face ofthe carrier ball said clamp being about 4 the same diameter as the flatupper face of said flange.

MACE A. COX. JAMES L. SHIVELY.

References Cited in the file of this patent UNITED STATES PATENTS 10Number Name Date 531,264: Kennedy Dec. 18, 1894 2,044,536 Maier June 16,1936 2,092,180 Porter Sept. 7, 1937

